Number of nX3 0..1 arrays with every element unequal to 0, 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.
A305680
Number of nX3 0..1 arrays with every element unequal to 0, 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =8a(2) =25a(3) =139a(4) =818a(5) =4869a(6) =29339a(7) =177688a(8) =1078090a(9) =6547420a(10) =39780381a(11) =241739361a(12) =1469140840a(13) =8928868485a(14) =54267151921a(15) =329823144348
External references
- oeis: A305680